A = [int(i) for i in input().split()]
a = set([])
for i in range(1,1000 + 1):
	B = []
	B.append(A[0] % i)
	B.append(A[1] % i)
	B.append(A[2] % i)
	if len(set(B)) == 3 and (B[1] == max(B) or B[1] == min(B)):
		a.add(B[0] * 10000 * 10000 + B[1] * 10000 + B[2])
print (len(a) if len(a) != 1 else 'INF')